Earthquake · reviewed by a seismologist
M 4.9mw
Earthquake near Barstow, CA
No earthquake was likely felt in Barstow in the 24 hours to 9:30 am PST (17:30 UTC). The last one was M 1.8, 3 km (2 mi) NNW, at 3:18 pm PDT on 17 July 2026, estimated intensity II (weak) in town; 1 felt report to USGS. Every earthquake near Barstow
This page: a magnitude 4.9 earthquake was recorded 22 km (14 mi) east-northeast of Barstow, CA, at 1:00 pm PDT on 29 July 2024 (20:00 UTC), 7.3 km deep. 7,869 people have reported feeling it to USGS.
USGS: 22 km ENE of Barstow, CA
- When
- 1:00 pm PDT on 29 July 2024 ()
- Where
- 22 km (14 mi) east-northeast of Barstow, CA · earthquakes near Barstow
- Magnitude
- M 4.9 (mw)
- Depth
- 7.3 km below the surface
- Felt
- 7,869 reports · strongest reported intensity VI
- Measured shaking
- intensity V (ShakeMap)
- USGS impact alert
- green
- Nearest
- San Bernardino County, 56 km E
- Nearest mapped fault
- Calico-Hidalgo fault, 3 km from its surface trace — near is not the same as on
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 120 days ago
Earthquake alerts for Barstow, CA
Get a notification in this browser when USGS records an earthquake near Barstow, CA. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon.
At this magnitude and depth, people at rest would likely notice it out to about 178 km (111 mi) from the epicentre. In Barstow, 22 km away, the estimate is intensity IV (light). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.
Likely felt in: Barstow 22 km, intensity IV · Barstow Heights 26 km, intensity IV · Fort Irwin 36 km, intensity IV. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 300 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.9 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 560× the energy of this one
- Mineral, Virginia 2011 M 5.8 25× the energy of this one
- Magna, Utah 2020 M 5.7 18× the energy of this one
- This earthquake M 4.9 about 300 tons of TNT
- Around the size people start to feel M 3.0 this one released 640× more
Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.
For this area
The largest earthquake within 50 km (31 mi) since our catalogue begins in 2016. The previous largest was M 4.6 on 2020-01-25.
Before 2016, the USGS record lists 6 earthquakes of M5 or more within 50 km; the five largest:
- 6.5 The 1947 Manix, California Earthquake · 24 km E of this epicentre
- 5.3 20km ENE of Barstow, California · 4 km NW of this epicentre
- 5.1 46 km E of Barstow, California · 28 km ESE of this epicentre
- 5.1 25km W of Ludlow, CA · 42 km SE of this epicentre
- 5.1 26km WNW of Ludlow, CA · 37 km ESE of this epicentre
Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.
Where
Epicentre 34.9503, -116.7867. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Bernardino County, CA | 56 km (35 mi) | E | earthquakes near San Bernardino County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
55 earthquakes have been recorded within 50 km since this one.
- 1.6 16 km NNE of Barstow, CA
- 2.0 38 km SE of Fort Irwin, CA
- 2.0 38 km SE of Fort Irwin, CA
- 1.7 38 km WSW of Ludlow, CA
- 1.6 16 km NNE of Apple Valley, CA
- 1.6 16 km NNE of Apple Valley, CA
- 1.6 16 km NNE of Apple Valley, CA
- 2.1 18 km WSW of Ludlow, CA
- 1.5 16 km NNE of Apple Valley, CA
- 2.5 20 km NNE of Barstow, CA
- 1.6 16 km NNE of Apple Valley, CA
- 1.6 16 km NNE of Apple Valley, CA
- 2.0 16 km NNE of Apple Valley, CA
- 2.5 19 km S of Fort Irwin, CA
- 1.7 16 km NNE of Apple Valley, CA
Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.